CN104350239A - Rotating machine and method for attaching atmospheric release mechanism of rotating machine - Google Patents
Rotating machine and method for attaching atmospheric release mechanism of rotating machine Download PDFInfo
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- CN104350239A CN104350239A CN201280072610.1A CN201280072610A CN104350239A CN 104350239 A CN104350239 A CN 104350239A CN 201280072610 A CN201280072610 A CN 201280072610A CN 104350239 A CN104350239 A CN 104350239A
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- Prior art keywords
- fracture plate
- clamp
- ring
- release mechanism
- press
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49231—I.C. [internal combustion] engine making
- Y10T29/49234—Rotary or radial engine making
Abstract
The objective of the present invention is to provide a rotating machine equipped with an atmospheric release mechanism with which damage can be prevented when a rupture disk is attached, and which can withstand long-term use, and to provide a method for attaching an atmospheric release mechanism of a rotating machine. The rotating machine is equipped with a casing, and atmospheric release mechanisms (20) that cover atmospheric release apertures (12) disposed in the casing and allow an internal fluid to be released to the atmosphere when the pressure inside the casing rises. The atmospheric release mechanisms (20) are constructed so as to include: a rupture disk (24) that ruptures when the pressure within the casing reaches a predetermined pressure; two circular clamping parts (22, 27) arranged so as to clamp the outer edge of the rupture disk (24) from both sides; multiple fastening members (29) that fasten the two circular clamping parts (22, 27), thereby clamping the rupture disk (24) between the two circular clamping parts (22, 27); and a circular spacer part (25) disposed along the outer periphery of the rupture disk (24).
Description
Technical field
The present invention relates to the rotary mechanism of air discharging gear release mechanism and the installation method of air discharging gear release mechanism that possess and prevent the pressure anomaly in enclosure interior space from rising.
Background technique
The rotary mechanism such as steam turbine, gas turbine becomes the housing and the structure being sealed with working fluid (internal flow) in the inner space of housing with collecting rotor.Further, when the normal operation of rotary mechanism, inner space and the atmospheric side of usual housing have pressure difference.Such as, the low pressure unit room of steam turbine has and accepts steam and the rotor rotated is covered by interior unit room and the structure that covered by outer unit room of rotor and interior unit room sometimes.In such a configuration, the inner space forming the housing of the shell of outer unit room plays a role as exhaust chamber.Exhaust chamber guides driving the steam after rotor (exhaust) to vapour condenser, is maintained in negative pressure when the normal operation of steam turbine.
But when there occurs the unfavorable condition etc. from the vapour leakage of pipe arrangement, pump in the negative pressure system of vapour condenser from outer unit room, the pressure of the inner space of outer unit room rises sometimes extremely.When this pressure becomes more than atmospheric pressure, due to the rising of steam temperature, the change of pressure direction of inwardly pressing from external pressure, the running of steam turbine and vapour condenser can be caused to occur abnormal, have to running is stopped.Therefore, the steam be provided with when exhaust pressure has exceeded barometric pressure in external unit room carries out the air discharging gear release mechanism of air releasing.
Usually, the air discharging gear release mechanism that rotary mechanism uses becomes following structure: have the fracture plate broken after the pressure in enclosure interior space reaches the pressure preset, make inner space be communicated with atmospheric side because fracture plate breaks when pressure anomaly rises, internal volume carries out earth pressure release.Usually, fracture plate utilizes support and is fixed on the opening of the air releasing arranged at housing, when the normal operation of rotary mechanism, this opening obturation is isolated from atmospheric side inner space.
As the technology of association, such as patent documentation 1 discloses a kind of air releasing float plate erecting device of steam turbine.This erecting device becomes the opening that the air discharge plate be made up of stereotype is configured at housing and utilizes pressing plate and bolt that the outer periphery of this air discharge plate are anchored on the structure of housing.The inner side of air discharge plate is provided with float plate, if the internal pressure of housing rises, then float plate moves to atmospheric side, utilizes the peripheral part of float plate to be cut off by stereotype and destroys.
In addition, in patent documentation 2, as the fracture plate of exhaust casing being applicable to steam turbine, describe the sheet metal of stainless steel, lead, nickel aluminium etc.
When using stereotype as air discharge plate recording as patent documentation 1,2, plumbous elastic constants is low, even if therefore do not reach cracking pressure degree pressure change under, stereotype also can be out of shape, due to this distortion repeatedly and the fastening bolt hole be arranged on stereotype stretches sometimes.Therefore, the sealing of air discharging gear release mechanism declines, and there is the possibility that air flows into the inner space of the housing being maintained negative pressure when running well.In order to prevent this situation, stereotype must be changed continually.And the lead as the material of this air discharge plate is harmful material, be therefore in the tendency using and be restricted.
Therefore, the air discharge plate with the structure overlapped by the multiple thin plates be made up of the material such as SUS, fluororesin is proposed.
Such as Patent Document 3 discloses a kind of structure the waste gas from gas turbine to be configured with fracture plate (burst disk) to the exhaust steam passage that boiler stove guides.This fracture plate makes coincidence such as the thin plate of graphite, SUS316, special teflon (TM trade mark) etc. manufacture, and is clamped by 2 lip parts being located at passage and supported.
[at first technical paper]
[patent documentation]
[patent documentation 1] Japanese Unexamined Patent Publication 62-81771 publication
[patent documentation 2] Japanese Patent Publication 2-126001 publication
[patent documentation 3] Japanese Unexamined Patent Publication 8-226308 publication
Summary of the invention
[inventing the problem that will solve]
The fracture plate that patent documentation 3 is recorded owing to having the structure overlapped by the multiple thin plates is made up of materials such as SUS, special teflon (TM trade mark), therefore at fracture plate oneself to form the situation of bolt hole with it not preferred from the viewpoint of the sealing guaranteed around bolt hole.Therefore, as recorded in patent documentation 3, usually at fracture plate self, bolt hole is not set, and utilizes flange etc. clamped by fracture plate and fix.
But, when this fracture plate is applicable to the housing of rotary mechanism, there is fracture plate and damage unexpectedly occurs thus cannot play break under setting pressure (cracking pressure) and make enclosure interior space be communicated with the situation of the original effect of such fracture plate with air.When being formed at fracture plate in particular for making slit that fracture plate breaks under setting pressure, can cause because repeatedly carrying out the running start/stop of rotary mechanism the situation that slit splits.
The present invention makes in view of the above circumstances, and its object is to provides a kind of installation method possessing the rotary mechanism of the air discharging gear release mechanism of the unexpected damage that can prevent fracture plate and the air discharging gear release mechanism of rotary mechanism.
[for solving the scheme of problem]
The present inventors, when having attempted the genesis mechanism of the unexpected damage finding out fracture plate, have known that fracture plate is the reason of the accidental injury of fracture plate to the mounting structure of rotary mechanism.
Fig. 7 represents the figure of fracture plate to an example of the mounting structure of rotary mechanism.Air discharging gear release mechanism shown in Fig. 7 is configured with sheet packing ring 52, flase floor 53, sheet packing ring 54, fracture plate 55, sheet packing ring 56, pressing plate 57, cover cap 58 successively on the fitting seat 51 of housing being located at rotary mechanism.Further, to being formed at the bolt hole inserting bolt 59 of cover cap 58, pressing plate 57, flase floor 53, sheet packing ring 54 and fitting seat 51 and fastening, fracture plate 55 is clamped by pressing plate 57 and flase floor 53 thus.
According to the opinion of the present inventors, in the unexpected damage of fracture plate 55, the gap 60 formed in the periphery of fracture plate 55 is chief reason.In the formation do not needed to the fastening hole of fracture plate 55 self and under easily guaranteeing the design philosophy that the sealing of fracture plate 55 is such, in order to the outer periphery of fracture plate 55 are clamped by pressing plate 57 and flase floor 53 and are formed this gap 60.When utilize under the state existed in gap 60 bolt 58 by pressing plate 57 and flase floor 53 fastening time, there is not the face of the load of bearing pressing plate 57 at bolt outer circumferential side, therefore as shown in phantom in FIG., the outer periphery of pressing plate 57 are slightly out of shape towards flase floor 53.Thus, the mode that pressing plate 57 bloats towards atmospheric side with central part bends, and be accompanied by this, fracture plate 55 also bends (central part of fracture plate 55 bloats to atmospheric side).Therefore, before the pressure considering in housing reaches setting pressure (cracking pressure), fracture plate 55 reaches the situation of damage.Especially, when fracture plate 55 forms slit portion, in slit portion, there is the possibility that slit portion splits in the flexure of the fracture plate 55 that the existence due to gap 60 causes and high stress when the installation of fracture plate 55.
Therefore, the feature of rotary mechanism of the present invention is to possess: housing; And air discharging gear release mechanism, the opening of being released by the air being arranged at described housing is inaccessible, and when the internal pressure of described housing rises, air releasing is carried out to internal flow, described air discharging gear release mechanism comprises: fracture plate, breaks when the internal pressure of described housing becomes predetermined pressure; 2 ring-type clamp-press parts, are configured to the outer periphery clamping described fracture plate from side, two sides; Multiple clamp structure, by fastening for described 2 ring-type clamp-press parts and clamp described fracture plate by described 2 ring-type clamp-press parts; And ring-like spacer portion, the periphery along described fracture plate is arranged.
According to above-mentioned rotary mechanism, the fracture plate clamped by 2 ring-type clamp-press parts is configured in the inner side in the region that clamp structure configures, and the periphery along this fracture plate arranges ring-like spacer portion.Thus, fracture plate and ring-like spacer portion is utilized can to bear roughly equably due to the fastening force of clamp structure from the power that the ring-type clamp-press part of atmospheric side applies to case side.Therefore, it is possible to prevent the ring-type clamp-press part of atmospheric side when fastening from deforming, the distortion of fracture plate also can be prevented.Therefore, it is possible to prevent the unexpected damage of fracture plate.
In above-mentioned rotary mechanism, also can be between the first clamp-press part of the side, inner space of described housing, be folded with liquid gasket in described fracture plate and described 2 ring-type clamp-press parts.
When arranging packing ring between fracture plate and the first clamp-press part (such as flase floor), the gap corresponding to the thickness of packing ring is formed between fracture plate and the first clamp-press part.Therefore, when the change of the enclosure interior pressure that the starting/stopping with rotary mechanism accompanies is carried out repeatedly, the amount of thickness (the large a small amount of in the gap of fracture plate and the first clamp-press part) of fracture plate displacement packing ring repeatedly, can encourage the unexpected damage of fracture plate.
Therefore, as the packing ring be folded between fracture plate and the first clamp-press part, use liquid gasket very thin compared with general sheet packing ring, thus the sealing between fracture plate and the first clamp-press part is maintained higher, and suppress the displacement repeatedly of the fracture plate accompanied with the starting/stopping of rotary mechanism, more effectively can prevent the unexpected damage of fracture plate.
In above-mentioned rotary mechanism, also can be that described ring-like spacer portion is and the liner of tabular that formed of described 2 ring-type clamp-press parts split ground.
Like this, ring-like spacer portion is made up of the liner of the tabular formed with the split of 2 ring-type clamp-press parts, the thickness adjustment of liner corresponding with fracture plate thus becomes easy, effectively can prevent the unexpected damage of fracture plate.
In addition, also can be that the elastic constants of described liner is roughly the same with the elastic constants of described fracture plate or higher than the elastic constants of fracture plate.
When the Elastic ratio fracture plate of liner is low, when clamp structure carries out fastening, the amount of deformation of liner is greater than the amount of deformation of fracture plate, there is the possibility that the second clamp-press part is slightly out of shape.Therefore, by liner being set to the elastic constants roughly the same with fracture plate or the structure higher than the elastic constants of fracture plate, reliably can being supported the outer periphery of the second clamp-press part thus by liner, the distortion of the second clamp-press part can be prevented.
In above-mentioned rotary mechanism, also can be, described ring-like spacer portion be the outer periphery of the clamp-press part of a side in described 2 ring-type clamp-press parts to the clamp-press part side of the opposing party the outstanding and stepped part formed.
Like this, by utilizing stepped part to form ring-like spacer portion, the unexpected damage of fracture plate can also be prevented thus.And, ring-like spacer portion (stepped part) can be set integratedly with the clamp-press part of a side, can parts count be cut down.
In the installation method of the air discharging gear release mechanism of rotary mechanism of the present invention, it is the method that air discharging gear release mechanism is installed to rotary mechanism, this air discharging gear release mechanism possesses: fracture plate, and the opening be arranged on the housing of rotary mechanism is inaccessible and break when the internal pressure of described housing becomes predetermined pressure; And 2 ring-type clamp-press parts, the outer periphery of described fracture plate are clamped from side, two sides, the feature of the installation method of the air discharging gear release mechanism of described rotary mechanism is to possess: the step the first clamp-press part being positioned at the side, inner space of described housing in described 2 ring-type clamp-press parts configuring described fracture plate and liner; The second clamp-press part being positioned at atmospheric side in described 2 ring-type clamp-press parts is configured in described fracture plate and the described step be lining with; And utilize multiple clamp structure by described first clamp-press part and the fastening step of described second clamp-press part, in the step of the described fracture plate of configuration and described liner, the periphery along described fracture plate configures described liner.
According to the installation method of above-mentioned air discharging gear release mechanism, by the periphery configuration liner along fracture plate, can bear by fracture plate and liner the power applied from the second clamp-press part to case side due to the fastening force of clamp structure roughly equably thus.Therefore, it is possible to prevent second clamp-press part when clamp structure is fastening from deforming, the distortion of fracture plate also can be prevented.Therefore, it is possible to prevent the unexpected damage of fracture plate.
[invention effect]
In the present invention, by arranging ring-like spacer portion (such as liner, stepped part) along the periphery of fracture plate, the flexure of the fracture plate accompanied with the distortion of the ring-type clamp-press part of atmospheric side when clamp structure can be suppressed thus fastening, can prevent the unexpected damage of the fracture plate caused that repeatedly operates of rotary mechanism.
Accompanying drawing explanation
Fig. 1 is the sectional view of the structure example of the steam turbine representing embodiments of the present invention.
Fig. 2 is the sectional view of the structure example of the atmosphere opening mechanism representing embodiments of the present invention.
Fig. 3 is the B portion enlarged view of the atmosphere opening mechanism shown in Fig. 2.
Fig. 4 is the figure arranged according to configuration sequence by the plan view of the component of each layer of formation atmosphere opening mechanism.
Fig. 5 is the flow chart of an example of the installation method of the air discharging gear release mechanism representing embodiments of the present invention.
Fig. 6 is the sectional view of the variation of the air discharging gear release mechanism representing embodiments of the present invention.
Fig. 7 is the figure of the reason of breaking of the fracture plate that atmosphere opening mechanism is described.
Embodiment
Below, with reference to the accompanying drawings embodiments of the present invention are described.But the size, material, shape, its relative configuration etc. of the constitutional detail that present embodiment is recorded, as long as no specific record, are not just meanings scope of the present invention being defined in this, only illustrative examples.
As an example of the rotary mechanism of embodiments of the present invention, at this, steam turbine possessing air discharging gear release mechanism is described.But the rotary mechanism of embodiments of the present invention is not defined as steam turbine, such as, other the rotary mechanism that gas turbine, compressor etc. possess air discharging gear release mechanism like that is also comprised.
Fig. 1 is the sectional view of the structure example of the steam turbine representing embodiments of the present invention.
Steam turbine 1 shown in Fig. 1 has the structure that is accommodated with interior unit room 3 in unit room 2 outside and to the steam turbine being positioned at the double fluid (second-rate mode) that the steam that flows into by the vapour inlet path 9 of unit room central authorities is shunted to the left and right.It should be noted that, steam turbine 1 also can be the low-pressure turbine that the steam after high-pressure turbine or middle pressure turbine have carried out work done flows.
Steam turbine 1 has the rotor 4 covered by outer unit room 2 and interior unit room 3.Rotor 4 supports as rotatable by rotor bearing outside unit room 2 outside, along its axial O symmetrical be provided with multistage rows of blades 5.These rows of blades 5 are covered by interior unit room 3.Interior unit room 3 be formed be configured in rows of blades 5 radial direction outside multiple aspirating chamber 6a, 6b, 6c, these aspirating chambers 6a, 6b, 6c from multistage rows of blades 5 each row extract out authorized pressure steam and externally derive.Rotor 4 and interior unit room 3 are covered by outer unit room 2.Further, in order to the rows of blades 5 in inside unit room 3 supplies steam, the vapour inlet path 9 being provided with steam supplying pipe 7 and being formed by partition wall 8.The exhaust chamber 11 of being discharged by the steam (exhaust) that have passed multistage rows of blades 5 is formed in the inner space of the housing 10 of the shell of the outer unit room 2 of formation.Exhaust chamber 11 is communicated with not shown vapour condenser, is maintained in vacuum when running well.
From exhaust chamber 11 in the negative pressure system of vapour condenser, when creating abnormal from the vapour leakage of pipe arrangement, the unfavorable condition of pump etc., the pressure of exhaust chamber 11 rises sometimes extremely.Therefore, when housing 10 is provided with and rises for the pressure anomaly in exhaust chamber 11 steam in exhaust chamber 11 carried out to the air discharging gear release mechanism 20 of air releasing.Air discharging gear release mechanism 20 configures in the mode of opening 12 obturation of being released by the air being formed at housing 10.Such as, air discharging gear release mechanism 20 is arranged on 4 positions at the upper surface of housing 10.
At this, with reference to Fig. 2 to Fig. 4, the detailed structure of air discharging gear release mechanism 20 is described.Fig. 2 is the sectional view of the structure example of the atmosphere opening mechanism representing embodiments of the present invention, and Fig. 3 is the A portion enlarged view of the atmosphere opening mechanism shown in Fig. 2, and Fig. 4 is the figure arranged by configuration sequence by the plan view of the component of each layer of formation atmosphere opening mechanism.
As shown in Figures 2 and 3, air discharging gear release mechanism 20 becomes the Rotating fields be laminated by multiple component, and the mode being configured in be formed the opening 12 that air is released is located on the base 13 of housing 10.Each layer of air discharging gear release mechanism 20 also can be made up of packing ring 21, flase floor 22, packing ring 23, fracture plate (burst disk) 24 and liner 25, packing ring 26, pressing plate 27, cover cap 28 from exhaust chamber 11 side towards atmospheric side successively.And each layer of air discharging gear release mechanism 20 utilizes the bolt 29 as clamp structure and mutually fastening, and is fixed on housing 10.
At this, use Fig. 4, specifically describe each layer of air discharging gear release mechanism 20.
Base 13 is outstanding to atmospheric side from housing 10, and the upper surface of this protuberance becomes circular tabular surface.Air discharging gear release mechanism 20 is positioned on the upper surface (circular tabular surface) of the protuberance of base 13.And, base 13 is provided with multiple bolt hole 13a that the periphery along opening 12 arranges.Bolt 29 (with reference to Fig. 2 and 3) is bolted with at bolt hole 13a.It should be noted that, the rib 13b that the mode that base 13 also can have to cross over opening 12 is arranged.
Packing ring 21 is formed as circular, improves sealing for being installed between base 13 and flase floor 22.As packing ring 21, preferably use sheet packing ring, such as soft packing ring, metal washer or semimetal packing ring etc. can be used.On this packing ring 21, also correspond to the bolt hole 13a of base 13 and be provided with multiple bolt hole 21a.It should be noted that, can for not arranging the structure of this packing ring 21 yet.
Flase floor 22 has: the ring-type clamp-press part 22a forming the first clamp-press part; At the grid portion 22b that the opening of ring-type clamp-press part 22a is arranged; The multiple bolt hole 22c formed corresponding to the bolt hole 13a of base 13.This flase floor 22 utilizes ring-type clamp-press part 22a to keep fracture plate 24, and when becoming vacuum in exhaust chamber 11, utilizes grid portion 22b to prevent fracture plate 24 to exhaust chamber 11 lateral bend.
Packing ring 23 is formed as circular, to be installed between flase floor 22 and fracture plate 24 and liner 25 and to improve sealing, and for the formation of arranging the high-precision tabular surface of fracture plate 24 and liner 25.This packing ring 23 also can be set to the structure same with packing ring 21, but from the view point of the gap reduced further between flase floor 22 and pressing plate 27, preferably uses and can be formed as the liquid gasket thinner than sheet packing ring.As liquid gasket, the liquid gasket of such as silicon system can be used.And liquid gasket can only be arranged in the position than multiple bolt 29 inner circumferential side side, also can be arranged on inner circumferential side and outer circumferential side.
Fracture plate 24 is formed as circular and has multiple slit portion 24a, breaks when becoming predetermined cracking pressure.Such as, fracture plate 24 can adopt the structure being clamped the fluororesin film-making guaranteeing sealing by the Stainless Sheet Steel being formed with slit portion.When being applicable to low-pressure steam turbine 1 as in the present embodiment, also can use such as at the fracture plate 24 of the ruptures at pressures slightly higher than barometric pressure.The outer periphery of exhaust chamber 11 side of this fracture plate 24 contact with the ring-type clamp-press part 22a of above-mentioned flase floor 22 via packing ring 23, and the outer periphery of atmospheric side contact with the outer periphery of pressing plate 27 described later via packing ring 26.Further, fracture plate 24 utilizes bolt 29 and is clamped between flase floor 22 and pressing plate 27, and is fixed on housing 10.
The bolt hole of bolt 29 is not formed at fracture plate 24 self, and bolt 29 is avoided fracture plate 24 and is arranged in the outer circumferential side of fracture plate 24.The region (clamp structure configuring area) 30 being arranged with bolt 29 is the annular sections between fracture plate 24 and the liner 25 illustrated as follows.That is, fracture plate 24 and liner 25 are not set at clamp structure configuring area 30, become the space that bolt 29 passes through.And, the bolt hole (13a, 21a, 22c, 26a, 27c, 28c) of the component of the layer different from fracture plate 24 and liner 25 is all arranged corresponding to clamp structure configuring area 30, is spirally connected by bolt 29 and these bolts hole of clamp structure configuring area 30.
Liner 25 forms ring-like spacer portion, is configured in the outer circumferential side of clamp structure configuring area 30 in the mode of the periphery surrounding fracture plate 24.And liner 25 has the thickness corresponding with fracture plate 24.Specifically, liner 25 also can be formed as the thickness roughly the same with fracture plate 24 or in order to make bolt 29 easily transmit to the fastening force of fracture plate 24 side and be formed as the thickness slightly thinner than fracture plate 24.
In addition, liner 25 also can use the material of the elastic constants roughly the same with fracture plate 24 or the elastic constants higher than the elastic constants of fracture plate 24, preferably uses metallic material.Such as, when the main material of fracture plate 24 is SUS316, liner 25 can use SS400.Like this, liner 25 has the elastic constants roughly the same with fracture plate 24 or the elastic constants higher than fracture plate 24, utilizes liner 25 reliably the outer periphery of pressing plate 27 to be kept to housing 11 side thus, can prevent the distortion of pressing plate 27.
Packing ring 26 is formed as circular, is installed between fracture plate 24 and pressing plate 27, for improving sealing between the two.This packing ring 26 has the structure roughly the same with packing ring 21, and the position that the bolt hole of the component of the layer with other is corresponding is provided with multiple bolt hole 26a.It should be noted that, also can be the structure not arranging this packing ring 26.
Pressing plate 27 has: the ring-type clamp-press part 27a forming the second clamp-press part; By the cap 27b of the atmosphere side obturation of ring-type clamp-press part; Be formed in the multiple bolt hole 27c on the position corresponding with the bolt hole of the component of other layer.This pressing plate 27 is configured to utilize ring-type clamp-press part 27a and cap 27b, at formation space, the side 27d (with reference to Fig. 3) in the face of fracture plate 24, when the pressure in exhaust chamber 11 becomes predetermined pressure (when such as pressure anomaly rises), fracture plate 24 bloats in the 27d of this space, and fracture plate 24 breaks thus.It should be noted that, cap 27b is arranged for preventing fracture plate 24 damages because of the dropping from outside etc. object, but also can be the structure not arranging this cap 27b.
It should be noted that, also can be formed as the structure not arranging pressing plate 27 self, in this case, the lip part 28a of cover cap 28 described later forms the second clamp-press part.Cover cap 28 has: lip part 28a; The framework 28b arranged in the mode of the opening crossing over lip part 28a; Be located at lip part 28a and be formed in the multiple bolt hole 28c on the position corresponding with the bolt hole of the component of other layer.
As shown in Figures 2 and 3, the bolt 29 as clamp structure is screwed togather with the bolt hole 13a of base 13 by each bolt hole of cover cap 28, pressing plate 27, packing ring 26, flase floor 22 and packing ring 21.Utilize the fastening force of this bolt 29, above-mentioned each structural element is fixed on housing 10 side, and clamp fracture plate 24 and liner 25 between flase floor 22 and pressing plate 27, they are fixed on housing 10 side.
Now, the power utilizing the fastening force of bolt 29 to apply from pressing plate 27 to housing 10 side is accepted by fracture plate 24 roughly equably in the inner side of bolt 29, and is accepted roughly equably by liner 25 in the outside of bolt 29.Therefore, it is possible to prevent pressing plate 27 when fastening from deforming, the distortion of fracture plate 24 also can be prevented.Therefore, in the air discharging gear release mechanism 20 of present embodiment, the unexpected damage of fracture plate 24 can be prevented.
Then, use Fig. 5, the installation method of air discharging gear release mechanism 20 is described.It should be noted that, Fig. 5 is the flow chart of an example of the installation method of the air discharging gear release mechanism representing embodiments of the present invention.
Correspond to the thickness (S1) that fracture plate 24 regulates liner 25 in advance.Specifically, the thickness of liner 25 is adjusted to the thickness roughly the same with fracture plate 24 or the thickness slightly thinner than fracture plate 24.Further, the base 13 being located at housing 10 configures packing ring 21 and flase floor 22 (S2), and on this flase floor 22, application of liquid packing ring is as packing ring 23 (S3).In addition, the liner 25 (S4) after this liquid gasket configuring fracture plate 24 and having carried out thickness adjustment.Then, fracture plate 24 and liner 25 configure packing ring 26 and pressing plate 27 (S5), this pressing plate 27 configures cover cap 28 (S6).It should be noted that, when carrying out laminated configuration to above-mentioned each component, making the position consistency of each bolt hole in advance.Further, make bolt 29, by bolt hole, each component is anchored on housing (S7).
As described above, according to the present embodiment, there is in the arranged outside of clamp structure configuring area 30 the ring-like spacer portion (liner 25) of the thickness corresponding with fracture plate 24, the flexure of the fracture plate 24 accompanied with the distortion of pressing plate 27 when bolt 29 can be suppressed thus fastening, can prevent the unexpected damage of fracture plate 24.
In addition, by adopting thin liquid gasket as the packing ring 23 be folded between fracture plate 24 and flase floor 22, thus the sealing between fracture plate 24 and flase floor 22 is maintained higher, and suppress the displacement repeatedly of the fracture plate 24 accompanied with the starting/stopping of steam turbine, more effectively can prevent the unexpected damage of fracture plate 24.
It should be noted that, in the above-described embodiment, describe the structure using liner 25 as ring-like spacer portion, but also can be the structure replacing liner 25 as shown in Figure 6 and use stepped part 22d.At this, Fig. 6 is the sectional view of the variation of the air discharging gear release mechanism representing embodiments of the present invention.
In the air discharging gear release mechanism 20 ' of this variation, flase floor 22 ' has as ring-type clamp-press part 22a ', the grid portion 22b ' of the first clamp-press part, bolt hole 22c ', stepped part 22d.The position than bolt hole 22c ' outer circumferential side side in the ring-type clamp-press part 22a ' of stepped part 22d is formed to fracture plate 24 side outstandingly.The face of fracture plate 24 side of stepped part 22d becomes the tabular surface connected with pressing plate 27 via packing ring 26.And stepped part 22d is formed as the height corresponding with the thickness of fracture plate 24.
Like this, by utilizing stepped part 22d to form ring-like spacer portion, the flexure of the fracture plate 24 accompanied with the distortion of pressing plate 27 when bolt 29 also can be suppressed fastening, thus prevent the unexpected damage of fracture plate 24.And, ring-like spacer portion (stepped part 22d) can be arranged integratedly with flase floor 22 ', can parts count be cut down.
It should be noted that, in figure 6, show the structure that stepped part 22d is formed at flase floor 22 ', but also can form stepped part on pressing plate 27.In this case, packing ring 26 can not be arranged, or uses liquid gasket as packing ring 26.
Above, understand embodiments of the present invention in detail, the present invention is not defined in this, without departing from the scope of spirit of the present invention, can certainly carry out various improvement, distortion.
Such as, in the above-described embodiment, describe the air discharging gear release mechanism 20,20 ' of the Rotating fields shown in Fig. 4 and 6, but in the present invention, as long as the outer periphery of fracture plate 24 are utilized 2 ring-type clamp-press parts from its side, two sides and undertaken clamping maintenance and the structure being provided with ring-like spacer portion (liner 25 or stepped part) in the outside of clamp structure configuring area 30 by clamp structure (such as bolt 29) by the Rotating fields of air discharging gear release mechanism, be just not particularly limited.
Claims (amendment according to treaty the 19th article)
1. a rotary mechanism, is characterized in that,
Possess: housing; And air discharging gear release mechanism, the opening of being released by the air being arranged at described housing is inaccessible, and carries out air releasing when the internal pressure of described housing rises to internal flow,
Described air discharging gear release mechanism comprises: fracture plate, breaks when the internal pressure of described housing becomes predetermined pressure; 2 ring-type clamp-press parts, are configured to the outer periphery clamping described fracture plate from side, two sides; Multiple clamp structure, by fastening for described 2 ring-type clamp-press parts and clamp described fracture plate by described 2 ring-type clamp-press parts; And ring-like spacer portion, the periphery along described fracture plate is arranged,
Described ring-like spacer portion is and the liner of tabular that formed of described 2 ring-type clamp-press parts split ground.
2. rotary mechanism according to claim 1, is characterized in that,
Between the first clamp-press part of the side, inner space of described housing, liquid gasket is folded with in described fracture plate and described 2 ring-type clamp-press parts.
3. rotary mechanism according to claim 1 and 2, is characterized in that,
The elastic constants of described liner is roughly the same with the elastic constants of described fracture plate or higher than the elastic constants of fracture plate.
4. a rotary mechanism, is characterized in that,
Possess: housing; And air discharging gear release mechanism, the opening of being released by the air being arranged at described housing is inaccessible, and carries out air releasing when the internal pressure of described housing rises to internal flow,
Described air discharging gear release mechanism comprises: fracture plate, breaks when the internal pressure of described housing becomes predetermined pressure; 2 ring-type clamp-press parts, are configured to the outer periphery clamping described fracture plate from side, two sides; Multiple clamp structure, by fastening for described 2 ring-type clamp-press parts and clamp described fracture plate by described 2 ring-type clamp-press parts; And ring-like spacer portion, the periphery along described fracture plate is arranged,
Described ring-like spacer portion be the clamp-press part of a side in described 2 ring-type clamp-press parts outer periphery than described clamp structure outer circumferential side side place to the clamp-press part side of the opposing party the outstanding and stepped part formed.
5. rotary mechanism according to claim 3, is characterized in that,
Described stepped part is formed as the height corresponding with the thickness of described fracture plate.
6. the rotary mechanism according to claim 3 or 4, is characterized in that,
Form to the clamp-press part being positioned at the side, inner space of described housing in described 2 ring-type clamp-press parts and described housing split.
7. the installation method of the air discharging gear release mechanism of a rotary mechanism, it is the method that air discharging gear release mechanism is installed to rotary mechanism, this air discharging gear release mechanism possesses: fracture plate, and the opening be arranged on the housing of rotary mechanism is inaccessible and break when the internal pressure of described housing becomes predetermined pressure; And 2 ring-type clamp-press parts, clamp the outer periphery of described fracture plate from side, two sides, the feature of the installation method of the air discharging gear release mechanism of described rotary mechanism is to possess:
The first clamp-press part being positioned at the side, inner space of described housing in described 2 ring-type clamp-press parts configures the step of described fracture plate and liner;
The second clamp-press part being positioned at atmospheric side in described 2 ring-type clamp-press parts is configured in described fracture plate and the described step be lining with; And
Utilize multiple clamp structure by described first clamp-press part and the fastening step of described second clamp-press part,
In the step configuring described fracture plate and described liner, the periphery along described fracture plate configures described liner.
Claims (6)
1. a rotary mechanism, is characterized in that,
Possess: housing; And air discharging gear release mechanism, the opening of being released by the air being arranged at described housing is inaccessible, and carries out air releasing when the internal pressure of described housing rises to internal flow,
Described air discharging gear release mechanism comprises: fracture plate, breaks when the internal pressure of described housing becomes predetermined pressure; 2 ring-type clamp-press parts, are configured to the outer periphery clamping described fracture plate from side, two sides; Multiple clamp structure, by fastening for described 2 ring-type clamp-press parts and clamp described fracture plate by described 2 ring-type clamp-press parts; And ring-like spacer portion, the periphery along described fracture plate is arranged.
2. rotary mechanism according to claim 1, is characterized in that,
Between the first clamp-press part of the side, inner space of described housing, liquid gasket is folded with in described fracture plate and described 2 ring-type clamp-press parts.
3., according to rotary mechanism according to claim 1 or claim 2, it is characterized in that,
Described ring-like spacer portion is and the liner of tabular that formed of described 2 ring-type clamp-press parts split ground.
4. rotary mechanism according to claim 3, is characterized in that,
The elastic constants of described liner is roughly the same with the elastic constants of described fracture plate or higher than the elastic constants of fracture plate.
5., according to rotary mechanism according to claim 1 or claim 2, it is characterized in that,
Described ring-like spacer portion be the outer periphery of the clamp-press part of a side in described 2 ring-type clamp-press parts to the clamp-press part side of the opposing party the outstanding and stepped part formed.
6. the installation method of the air discharging gear release mechanism of a rotary mechanism, it is the method that air discharging gear release mechanism is installed to rotary mechanism, this air discharging gear release mechanism possesses: fracture plate, and the opening be arranged on the housing of rotary mechanism is inaccessible and break when the internal pressure of described housing becomes predetermined pressure; And 2 ring-type clamp-press parts, clamp the outer periphery of described fracture plate from side, two sides, the feature of the installation method of the air discharging gear release mechanism of described rotary mechanism is to possess:
The first clamp-press part being positioned at the side, inner space of described housing in described 2 ring-type clamp-press parts configures the step of described fracture plate and liner;
The second clamp-press part being positioned at atmospheric side in described 2 ring-type clamp-press parts is configured in described fracture plate and the described step be lining with; And
Utilize multiple clamp structure by described first clamp-press part and the fastening step of described second clamp-press part,
In the step configuring described fracture plate and described liner, the periphery along described fracture plate configures described liner.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-102267 | 2012-04-27 | ||
| JP2012102267A JP5743100B2 (en) | 2012-04-27 | 2012-04-27 | Rotating machine and attachment method of atmospheric release mechanism of rotating machine |
| PCT/JP2012/082847 WO2013161123A1 (en) | 2012-04-27 | 2012-12-18 | Rotating machine and method for attaching atmospheric release mechanism of rotating machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104350239A true CN104350239A (en) | 2015-02-11 |
| CN104350239B CN104350239B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280072610.1A Active CN104350239B (en) | 2012-04-27 | 2012-12-18 | The installation method of the air discharging gear release mechanism of rotary mechanism and rotary mechanism |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9291100B2 (en) |
| JP (1) | JP5743100B2 (en) |
| KR (1) | KR101570312B1 (en) |
| CN (1) | CN104350239B (en) |
| DE (1) | DE112012006272B4 (en) |
| IN (1) | IN2014MN02098A (en) |
| WO (1) | WO2013161123A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6037684B2 (en) * | 2012-07-02 | 2016-12-07 | 三菱日立パワーシステムズ株式会社 | Steam turbine equipment |
| ES2784445T3 (en) * | 2017-08-17 | 2020-09-25 | Schunk Kohlenstofftechnik Gmbh | Pressure fuse mechanism and its manufacturing procedure |
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- 2012-12-18 WO PCT/JP2012/082847 patent/WO2013161123A1/en active Application Filing
- 2012-12-18 CN CN201280072610.1A patent/CN104350239B/en active Active
- 2012-12-18 DE DE112012006272.8T patent/DE112012006272B4/en active Active
- 2012-12-18 IN IN2098MUN2014 patent/IN2014MN02098A/en unknown
- 2012-12-18 KR KR1020147029333A patent/KR101570312B1/en active IP Right Grant
- 2012-12-28 US US13/729,402 patent/US9291100B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104350239B (en) | 2016-04-20 |
| US20130287549A1 (en) | 2013-10-31 |
| KR101570312B1 (en) | 2015-11-18 |
| WO2013161123A1 (en) | 2013-10-31 |
| DE112012006272T5 (en) | 2015-02-05 |
| JP5743100B2 (en) | 2015-07-01 |
| JP2013231359A (en) | 2013-11-14 |
| KR20140138317A (en) | 2014-12-03 |
| DE112012006272B4 (en) | 2016-03-24 |
| IN2014MN02098A (en) | 2015-09-04 |
| US9291100B2 (en) | 2016-03-22 |
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